The visitors, meanwhile, are looking to clinch consecutive victories after beating Aldosivi 5-0 last weekend.
Match preview
Sarmiento have picked up seven points from their opening five league games, leaving them in 12th place ahead of Sunday's contest.
They started the season with a 2-0 away defeat before opening their account with a 1-0 home win over Argentinos Jrs, however an away encounter with Estudiantes on matchday three resulted in their second defeat of the season.
A return to home surroundings brought about another victory as Sarmiento dispatched Patronato via a 3-1 scoreline before they played out a goalless against Platense last weekend to collect their first away point of the Primera season.
While their three away matches have yielded one point, their two home games have both resulted in victories, and they will be aiming to clinch a third consecutive home win on Sunday.
A win at the weekend would also help Sarmiento leapfrog their opponents in the league table, with the gap currently two points between the two sides.
Although they may only be two points clear of their opponents, Racing Club are currently sat in third position after picking up nine points from their five league games.
Like Sarmiento, Fernando Gago's side also boast a 100% home record after clinching a third consecutive home league win last weekend.
Racing Club took a two-goal lead into half time in their home meeting with Aldosivi thanks to goals from Emiliano Vecchio and Enzo Copetti.
Leonardo Sigali added a third in the 55th minute, before a Rufino Lucero own goal and a Jonathan Gomez strike completed the comprehensive 5-0 victory.
Although their home form has been impressive, Racing Club will be looking to collect their first away points of the Primera season this weekend after losing both of their away matches so far this term.
Sarmiento Argentine Primera Division form:
Sarmiento form (all competitions):
Racing Club Argentine Primera Division form:
Racing Club form (all competitions):
Team News
Lucas Acosta is unavailable for the hosts, with a knee injury keeping the 27-year-old on the sidelines.
Having started the last three matches for the side, Franco Quinteros will retain his place at left-back, with Sarmiento expected to keep changes to a minimum.
After making substitute appearances in the last two matches, Javier Toledo is set to be presented with a starting spot for Sunday's encounter.
As for the visitors, they could be without the services of Carlos Alcaraz, who has missed the last four matches through injury.
Gabriel Hauche came off the bench against Aldosivi to make his return from injury, and the 35-year-old is expected to be amongst the substitutes.
After claiming a comfortable 5-0 victory in their last outing, Racing could name an unchanged lineup for Sunday's contest.
Sarmiento possible starting lineup:
Meza; Bettini, Sauro, Rasmussen, Quinteros; Arismendi, Mendez, Castro, Brea; Toledo, Torres
Racing Club possible starting lineup:
Gomez; Mura, Sigali, Insua, Mena; Chancalay, Moreno, Miranda, Vecchio; Carbonero, Copetti